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1. Why is it useful to factor out the GCF when factoring?

2. How do you recognize if a binomial is a difference of perfect squares and how is the pattern used to factor the binomial?
3. How are the zeroes of a polynomial function used to create a graph?

1 Answer

4 votes
Its useful to factor out the Gfc to reduce the amount of work you have to do.
x^2-y^2=(x+y)(x-y)
The zeros cross the axis
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